public class a {

    public static void main(String[] args) {
        System.out.println("a");
        System.out.println("b");
        System.out.println("3");
        System.out.println("4");
        System.out.println("5");
        System.out.println("6");
        System.out.println("7");
        System.out.println("8");
        System.out.println("9");
        System.out.println("10");

    }

}
